directed set

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directed set [də′rek·təd ′set]

(mathematics)

A partially ordered set with the property that for every pair of elementsa,bin the set, there is a third element which is larger than bothaandb. Also known as directed system; Moore-Smith set.

(theory)

directed set - A set X is directed under some relation, <= (less than or equal), if it is non-empty and if for any two elements x and y there exists an element z such that x <= z and y <= z. I.e. all pairs have an upper bound.

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No references found			finding some directed set of questions and insights that converges on the discovery of the key mathematical relationship is essential. On two types of learning (in mathematics) and implications for ... by Quinn, Terrance / Focus on Learning Problems in Mathematics			direct-insert subroutine direct-line drive direct-mail marketing direct-map cache direct-plunger elevator direct-power generator direct-radiator speaker direct-reading gage direct-reduction process direct-view storage tube direct-vision nephoscope direct-vision prism direct-vision spectroscope direct-wire circuit direct-writing galvanometer direct-writing recorder directed acyclic graph directed angle directed cycle directed graph directed line directed network directed number Directed Oc directed path directed set directed system Directing direction Direction Angle direction angles direction cosine Direction Cosines Direction Field Direction Finder direction finder deviation Direction Finding direction indicator direction numbers Direction of Easy Magnetization direction of propagation direction of relative movement Direction Projector direction ratios direction rectifier direction-finder-bearing indicator direction-finding net direction-giving beacon direction-independent radar directional directional antenna			Directed Mission Task Directed molecular evolution directed network Directed Nuclease Editor directed number Directed Oc Directed Order Directed Ordered Acyclic Graph Directed Orders Directed panspermia Directed panspermia Directed path Directed Patrol Mission Directed Patrol Unit Directed Plan of Correction Directed Planning Option Directed Polymer in Random Media Directed Pressure Point Technique Directed Reading-Thinking Approach Directed Retry Directed Reverse Path Join Protocol directed sale Directed Sales Directed Search Area Directed Self-Avoiding Walk directed set Directed Sound Field Geometry Directed Stockpile Work Directed Studies Directed Studies Group directed study Directed Study Questions directed system Directed Technologies, Inc. Directed to Individual Directed Training Association directed verdict directed verdict Directed VLAN Service directed-energy device directed-energy protective measures directed-energy warfare Directed-energy weapon Directed-energy weapons Directed-Lie Control Test Directed-Valence Molecular Orbital Directer Directer Directer Directer Directer Directer plane Directeur Directeur - Politique d'Emploi des Militaires Directeur de l'Agence Régionale de l'Hospitalisation

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